National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hawaii and Guam Concerns; Record Warmth Spreads Eastward; Heavy Snow for Sierra-Nevada; Severe Weather for the Plains

A very active spring pattern with tropical concerns across the Pacific. Heavy rainfall will continue to impact Hawaii this weekend. Meanwhile we continue to monitor a developing typhoon that may affect Guam into early next week. For the Lower 48, heavy snow for mountains of California this weekend, increase threat for severe thunderstorms next week for the Plains and record warmth spreads east. Read More >

Hazardous Weather Conditions

Current conditions at

Johnstown - Cambria County Airport (KJST)

Lat: 40.31°NLon: 78.83°WElev: 2274ft.

Fair

50°F

10°C

Humidity 44%
Wind Speed S 14 G 21 mph
Barometer 30.35 in (1028.4 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 12 Apr 8:54 am EDT
Extended Forecast for

Brownstown PA

  • Today

    Today: Increasing clouds, with a high near 74. South wind 6 to 9 mph, with gusts as high as 20 mph.

    High: 74 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Mostly cloudy, with a low around 59. South wind 3 to 5 mph.

    Low: 59 °F

    Mostly Cloudy

  • Monday

    Monday: Showers likely, mainly before 2pm. Mostly cloudy, with a high near 74. Southwest wind 7 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 74 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A chance of showers, mainly before 8pm. Mostly cloudy, with a low around 60. West wind 3 to 6 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 60 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 5pm. Partly sunny, with a high near 81. Southwest wind 6 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.

    High: 81 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 63 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 40%.

    High: 84 °F

    Partly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers before 2am. Mostly cloudy, with a low around 64. Chance of precipitation is 30%.

    Low: 64 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 30%.

    High: 82 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Today
Increasing clouds, with a high near 74. South wind 6 to 9 mph, with gusts as high as 20 mph.
Tonight
Mostly cloudy, with a low around 59. South wind 3 to 5 mph.
Monday
Showers likely, mainly before 2pm. Mostly cloudy, with a high near 74. Southwest wind 7 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
A chance of showers, mainly before 8pm. Mostly cloudy, with a low around 60. West wind 3 to 6 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
A chance of showers, with thunderstorms also possible after 5pm. Partly sunny, with a high near 81. Southwest wind 6 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 40%.
Wednesday Night
A chance of showers before 2am. Mostly cloudy, with a low around 64. Chance of precipitation is 30%.
Thursday
A chance of showers after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 30%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 60. Chance of precipitation is 40%.
Friday
Partly sunny, with a high near 79.
Friday Night
Partly cloudy, with a low around 58.
Saturday
A chance of showers. Partly sunny, with a high near 84. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Brownstown PA
 40.34°N 78.92°W (Elev. 1388 ft)
Last Update:
8:21 am EDT Apr 12, 2026
Forecast Valid:
9am EDT Apr 12, 2026-6pm EDT Apr 18, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation